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8308464 |
Bearing and liquid cooling type screw compressor
A groove is provided in the periphery of a pressure receiving area of a pressure receiving surface opposing to the load of axis weight within a bearing surface supporting an axis, and a liquid...
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8308461 |
Scroll compressor with improved rotation prevention mechanism
To provide a scroll compressor capable of reducing a noise occurring in a pin-and-ring type self rotation preventing mechanism and improving compression performance. In a scroll compressor...
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8308462 |
Pump assembly with radial clutch for use in power transmission assemblies
A power transmission device includes a rotatable shaft having an axis of rotation. A lubrication pump includes an inner rotor and an outer rotor in meshed engagement with one another. A clutch...
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8308459 |
Moineau pump
A Moineau pump or Moineau compressor includes a conically designed inner (4) and a conically designed outer (8) element, whose longitudinal axes (X1, X2) run at an angle to one another and...
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8308463 |
Resin screw rotor molded to a metallic shaft
The present invention is to provide a screw rotor including a resin rotor formed around a metallic shaft without generation of cracks. Spiral chamfers are formed on surfaces of metallic shafts...
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8308460 |
Scroll compressor
A scroll compressor includes a fixed scroll having a fixed wrap, and an orbiting scroll having an orbiting wrap engaged with the fixed wrap to define a first compression chamber between an inner...
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8303282 |
Gear pump for a power steering system
The invention relates to a gear pump, especially for a power steering system, having a housing, a first cover and a second cover, the first cover being integrated into the housing.
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8303281 |
Gear type performance oil pump
A high performance gear type oil pump for an internal combustion engine which has drive and driven gears which are, on one common side of the gears, respectively supported from the housing by a...
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8303283 |
Power steering oil pump
A power steering oil pump may include a pump housing, a rotor that is equipped with a plurality of vanes and coupled to the pump housing to rotate therein, a cam ring inserted between the rotor and...
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8303278 |
Scroll compressor utilizing liquid or vapor injection
A scroll compressor that utilizes liquid or vapor injection to cool a working fluid being compressed by an orbiting scroll member and a non-orbiting scroll member, and/or to increase the efficiency...
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8303277 |
Blending pump assembly
A blending pump assembly for accurately maintaining the proper ratio of two fluid components. Flow of a first fluid is utilized to drive a fluid motor, which in turn drives a pumping mechanism to...
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8303279 |
Injection tubes for injection of fluid into a scroll compressor
A scroll compressor is provided with injection tubes which extend through an upper shell and into a fixed scroll member. The injection tubes are fixed relative to the fixed scroll member, and may...
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8303280 |
Scroll type compressor comprising an Oldham ring having a reinforced pawls and a mirror plate having a concave recess for a movable scroll
In a scroll type compressor including a fixed scroll having a mirror plate and a lap provided to the mirror plate, a movable scroll having a mirror plate and a lap provided to the mirror plate and...
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8297252 |
Rotary one cycle internal combustion engine
A rotary internal combustion engine including a rotor assembly and a shaft, whereby the rotor assembly is mounted upon the shaft. The rotary internal combustion engine also includes a first vane...
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8297943 |
Pump control using overpressure source
A rotary positive displacement pump employs the higher pressure available at a region within the rotor chamber after the outlet port to augment the force of a biasing spring in a control system. A...
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8297958 |
Optimized discharge port for scroll compressor with tip seals
A scroll compressor having a first compressor body with a first base, a first rib that projects from the first base, and a discharge port. A second compressor body has a second base and a second...
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8297239 |
Gyroscopic rotary engine
A gyroscopic rotary engine includes a rotary disc used as a cylinder block; a cylinder head on which medium inlets and medium outlets are arranged in a spaced relation; wherein at least two arched...
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8297253 |
Rotary piston engine
A rotary piston engine with a frame, a cylinder liner mounted rotatably therein, a rotor mounted coaxially in the cylinder liner and a gear mechanism connecting the frame, the liner and the rotor,...
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8292599 |
Compressor reverse rotation of variable duration on start-up
In a method of operating a compressor at startup, the compressor is rotated in reverse for a brief period of time. The compressor is of a type that does not compress liquid when rotated in reverse....
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8292605 |
Rotary fluid device with multi-level phase shift control
A method for controlling a rotary fluid device includes providing a rotary fluid device having a fluid displacement assembly and a plurality of control valves. The fluid displacement assembly...
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8292597 |
High-speed gear pump
A gear pump comprises a casing having an inlet, an interior, and an outlet. An inlet gear is positioned at the inlet and pressurizes fluid received at the inlet. A drive gear is positioned at the...
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8287259 |
Oil-cooled type screw compressor
An oil-cooled type screw compressor includes shafts mounted on rotors in a casing and extended to two sides of the rotors. Thrust plates rotate with the shafts. The thrust plates are sealed while...
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8286609 |
Rotary energy converter with retractable barrier
A rotary internal combustion engine includes an outer housing and an inner housing and an enclosure defined therebetween. At least one of the outer and inner housings is rotatable relative to the...
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8287257 |
Oldham coupling
A rotary compressor including a housing, a first scroll member, a second scroll member in meshing engagement with the first scroll member, and an Oldham coupling coupled to the second scroll member...
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8287248 |
Compressor
A system is provided for maintaining the position of a valve in a compressor. The valve includes a valve body connected to a piston in a cylinder by a shaft. The valve body is positioned in the...
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8286608 |
Sealing system for an oscillating-piston engine
A sealing system for oscillating-piston engines that include two oscillating pistons that revolve together in a spherical housing. The pistons perform reciprocating oscillating movements in...
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8287258 |
Positive displacement pump with impeller and method of manufacturing
A rotary positive displacement pump (1) that includes an impeller (3) that defines, within a pumping chamber (20), a plurality of successive chambers (21) with variable volume through which a fluid...
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8282371 |
Screw pump
A screw pump includes a casing including a main accommodating bore and plural sub accommodating bores, a main rotor adapted to be rotatably accommodated in the main accommodating bore, and plural...
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8282370 |
Stepped scroll compressor with changing step mesh gaps
A scroll compressor having an improved compression efficiency by optimizing a step mesh gap in an operating state is provided. The scroll compressor having a step-like shape has a step-mesh-gap set...
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8282369 |
Variable displacement vane pump with defined cam profile
A variable displacement pump including a rotor, a plurality of vanes, a swingable cam ring, a suction port and a discharge port, wherein a dynamic radius of the vane which extends from a center of...
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8281676 |
Transmission utilizing hypocycloid motion
A transmission system for transmitting a rotary motion input to a rotary motion output utilizing hypocycloid motion multiplication is disclosed. The system comprises an input mechanism, at least...
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8283879 |
Braking controller of a three-phase permanent magnetic brushless DC motor for directly driving a screw pump
A braking controller of a three-phase permanent magnetic brushless DC motor for directly driving a screw pump includes a detection circuit for detecting power supply states of the three-phase...
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8277208 |
Split discharge vane pump and fluid metering system therefor
A split discharge vane pump is disclosed having a pump body that includes an interior pumping chamber having a central axis and defining a continuous peripheral cam surface, the cam surface...
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8277207 |
Oil supply method of two-stage screw compressor, two-stage screw compressor applying the method, and method of operating refrigerating machine having the compressor
A two-stage screw compressor has a low-pressure stage screw compressor and a high-pressure stage screw compressor integrally constructed. Compression space is formed by a male rotor and a female...
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8276395 |
Pulse width modulation with reduced suction pressure to improve efficiency
The present invention relates to a way of reducing the amount of energy required to partially compress a refrigerant in a compressor operating in a rapidly cycled unloaded mode. A valve on a...
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8272841 |
Propeller blade retention
A propeller blade assembly having mounting arrangements for composite aircraft propeller blades.
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8272846 |
Integral slide valve relief valve
Various embodiments of the invention provide a screw compressor for compressing a refrigerant in a refrigeration system. The screw compressor includes a rotor case, which accommodates a primary...
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8267678 |
Vane type vacuum pump
A vane type vacuum pump 1 is provided in the vicinity of an air intake passage 11 for sucking the air into a pump chamber 2, and communicates a space A on the front side and a space B on the back...
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8267671 |
Variable displacement pump
A variable displacement pump includes: a pump body; a rotor; a cam ring; inlet and outlet ports; first and second fluid pressure chambers; a metering orifice provided in a discharge passage...
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8267677 |
Gasket part for a pump
The invention relates to a gasket part for a pump to be used in conjunction with a bearing part (1) of the pump, through which there is arranged a drive shaft (2). According to the invention, the...
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8262377 |
Injection molded scroll form
Scrolls made from injection molding processes are disclosed. The scroll components have a tip seal groove defined within an involute portion of the scroll. Bearing and tip seal engaging plates are...
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8262365 |
Method for operation of a compressor unit, and associated compressor unit
The invention relates to a method for operating a compressor unit, in particular for underwater operation. The aim of the invention is to minimize the risk of gas hydrate formation during the...
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8257072 |
Vane compressor with improved vanes
A vane-type compressor includes: a cylinder block; a rotor rotating within the cylinder block; vane slots provided on the rotor; vanes each provided slidably within each of the vane slots; coil...
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8257071 |
Vane pump
A vane pump includes a casing and a rotary unit rotatably held within the casing. The rotary unit includes a base portion with radially outwardly opened slits extending radially with respect to a...
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8257070 |
Seal apparatus of gear pump
A seal apparatus includes at least one pair of gears; a side plate arranged adjacent to the pair of gears; and a housing sandwiching the side plate. At least one of the side plate and the housing...
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8257068 |
Cooling system for gerotor motor
A hydraulic motor having a cooling system includes a stator, a rotor that rotates and orbits in the stator, a drive link connected to the rotor, and a housing connected with the stator. The housing...
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8257057 |
Variable displacement vane pump
A variable displacement vane pump includes a rotor, a swingable annular cam ring receiving therein the rotor, a pump body encasing the cam ring and rotor, and a pressure plate which is disposed...
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8257069 |
Low speed, high torque rotary abutment motor
An improved high torque rotary abutment motor is provided that is capable of producing ultra high pressures, while still remaining light weight and reliably efficient. The rotary abutment motor is...
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8256403 |
Engine and supercharger
An internal combustion engine is coupled to a supercharger operable to supply varying amounts of air to the engine responsive to the load on the engine. The supercharger has a pair of screw rotors...
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8251675 |
Input shaft driven hybrid transmission pump
A pump for a hybrid transmission includes an input shaft having a mating surface—which may include a flat portion—on an outer surface thereof, and a pump rotor coaxial with the input shaft. The pum...
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